Comment 1 for bug 1265528

I'll take the system-settings side of this. I'll create the AS schema and have it sync the values from GSettings to there initially. When telephony-service switches over to using AS then we can drop the syncing and stop setting the GSettings values.

There will need to be migration in place. If session-migration works or can be made to work on the phone then we should use that, otherwise telephony-service can do it - copying GSettings into AS if it's different.